Eg. He is to go to England next week.
Eg. You are to explain this.
Who is to go there?
Eg. We are to meet at the school gate.
Eg. They are having a class.
The window was broken by Mary.
Eg. Do you want to pass the exam?
2.do + not 构成否定句。
Eg. He doesn't like to study.
Eg. Don't go there.
Eg. I do miss you. 我真的想你。
Eg. Never did I hear of such a thing.
注意： 引导此类倒装句的副词有never、seldom、rarely、little、only、 so、well等。
Eg. By the end of last month， they had finished half of their work.
2.have + been +现在分词，构成完成进行时，即现在完成时。
Eg. I have been studying English for ten years.
Eg. English has been taught in China for many years.